Perhaps you should try some spelling variations:
"prairie city grades" » "prairie city graded", "prairie city games", "prairie city trade"
"prairie city class" » "prairie unity class", "prairie duty class", "prairie cityzen class"
"prairie city grand" » "prairie city brand", "prairie city guard", "prairie city land"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("prairie city class") OR ("prairie city grand"))) OR ("prairie city grades")).
• Removing quotes may allow a broader search: (((( prairie city class ) or ( prairie city grand ))) or ( prairie city grades )).
• Adding a wildcard symbol may retrieve word variants: (((("prairie city class") or ("prairie city grand"))) or ("prairie city grades"))*.